using System;
using System.Collections;

using iTextSharp.text;

#region Mozilla Public License 1.1
/*
 * $Id: PdfPage.cs,v 1.3 2008/05/13 11:25:21 psoares33 Exp $
 * 
 *
 * Copyright 1999, 2000, 2001, 2002 Bruno Lowagie
 *
 * The contents of this file are subject to the Mozilla Public License Version 1.1
 * (the "License"); you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at http://www.mozilla.org/MPL/
 *
 * Software distributed under the License is distributed on an "AS IS" basis,
 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
 * for the specific language governing rights and limitations under the License.
 *
 * The Original Code is 'iText, a free JAVA-PDF library'.
 *
 * The Initial Developer of the Original Code is Bruno Lowagie. Portions created by
 * the Initial Developer are Copyright (C) 1999, 2000, 2001, 2002 by Bruno Lowagie.
 * All Rights Reserved.
 * Co-Developer of the code is Paulo Soares. Portions created by the Co-Developer
 * are Copyright (C) 2000, 2001, 2002 by Paulo Soares. All Rights Reserved.
 *
 * Contributor(s): all the names of the contributors are added in the source code
 * where applicable.
 */
#endregion Mozilla Public License 1.1


namespace iTextSharp.text.pdf
{
    /**
     * <CODE>PdfPage</CODE> is the PDF Page-object.
     * <P/>
     * A Page object is a dictionary whose keys describe a single page containing text,
     * graphics, and images. A Page onjects is a leaf of the Pages tree.<BR/>
     * This object is described in the 'Portable Document Format Reference Manual version 1.3'
     * section 6.4 (page 73-81)
     *
     * @see     PdfPageElement
     * @see     PdfPages
     */

    public class PdfPage : PdfDictionary
    {

        // membervariables
        private static String[] boxStrings = { "crop", "trim", "art", "bleed" };
        private static PdfName[] boxNames = { PdfName.CROPBOX, PdfName.TRIMBOX, PdfName.ARTBOX, PdfName.BLEEDBOX };

        /** value of the <B>Rotate</B> key for a page in PORTRAIT */
        public static PdfNumber PORTRAIT = new PdfNumber(0);

        /** value of the <B>Rotate</B> key for a page in LANDSCAPE */
        public static PdfNumber LANDSCAPE = new PdfNumber(90);

        /** value of the <B>Rotate</B> key for a page in INVERTEDPORTRAIT */
        public static PdfNumber INVERTEDPORTRAIT = new PdfNumber(180);

        /** value of the <B>Rotate</B> key for a page in SEASCAPE */
        public static PdfNumber SEASCAPE = new PdfNumber(270);

        /** value of the <B>MediaBox</B> key */
        PdfRectangle mediaBox;

        // constructors

        /**
         * Constructs a <CODE>PdfPage</CODE>.
         *
         * @param       mediaBox        a value for the <B>MediaBox</B> key
         * @param       resources       an indirect reference to a <CODE>PdfResources</CODE>-object
         * @param       rotate          a value for the <B>Rotate</B> key
         */

        internal PdfPage(PdfRectangle mediaBox, Hashtable boxSize, PdfDictionary resources, int rotate)
            : base(PAGE)
        {
            this.mediaBox = mediaBox;
            Put(PdfName.MEDIABOX, mediaBox);
            Put(PdfName.RESOURCES, resources);
            if (rotate != 0)
            {
                Put(PdfName.ROTATE, new PdfNumber(rotate));
            }
            for (int k = 0; k < boxStrings.Length; ++k)
            {
                PdfObject rect = (PdfObject)boxSize[boxStrings[k]];
                if (rect != null)
                    Put(boxNames[k], rect);
            }
        }

        /**
         * Constructs a <CODE>PdfPage</CODE>.
         *
         * @param       mediaBox        a value for the <B>MediaBox</B> key
         * @param       resources       an indirect reference to a <CODE>PdfResources</CODE>-object
         */

        internal PdfPage(PdfRectangle mediaBox, Hashtable boxSize, PdfDictionary resources)
            : this(mediaBox, boxSize, resources, 0)
        {
        }

        /**
         * Checks if this page element is a tree of pages.
         * <P/>
         * This method allways returns <CODE>false</CODE>.
         *
         * @return  <CODE>false</CODE> because this is a single page
         */

        public bool IsParent()
        {
            return false;
        }

        // methods

        /**
         * Adds an indirect reference pointing to a <CODE>PdfContents</CODE>-object.
         *
         * @param       contents        an indirect reference to a <CODE>PdfContents</CODE>-object
         */

        internal void Add(PdfIndirectReference contents)
        {
            Put(PdfName.CONTENTS, contents);
        }

        /**
         * Rotates the mediabox, but not the text in it.
         *
         * @return      a <CODE>PdfRectangle</CODE>
         */

        internal PdfRectangle RotateMediaBox()
        {
            this.mediaBox = mediaBox.Rotate;
            Put(PdfName.MEDIABOX, this.mediaBox);
            return this.mediaBox;
        }

        /**
         * Returns the MediaBox of this Page.
         *
         * @return      a <CODE>PdfRectangle</CODE>
         */

        internal PdfRectangle MediaBox
        {
            get
            {
                return mediaBox;
            }
        }
    }
}